in reality
实际上, 事实上
例句与用法：
In reality, things always happen out of expectation.
现实中，事情总是出乎意料地发生。
It seems as if he knew everything, but in reality, he is as stupid as can be.
他似乎是个万事通,其实他是再愚蠢不过了。
In reality or in truth; actually.
实际上，确实情况; 事实上
One's school life seems happier in retrospect than in reality.
人们的学校生活回想起来要比实际上的快乐。
The house looks very old, but in reality it's quite new.
这房子看起来很旧，实际上很新。
实际上
Everyone likes the stranger, but in reality he is a criminal.
每个人都喜欢这位陌生人, 其实他却是个罪犯。